Adjustable plaster ring construction



June 21, 1955 c. N. O'DAY 2,711,127

ADJUSTABLE PLASTER RING CONSTRUCTION Filed July 12, 1949 INVENTOR C'ofifhndjvf 022 ATTORNEY Un ted States Patent ADJUSTABLE PLASTER RING CONSTRUCTION Cortland N. ODay, New York, N. Y., assignor to Air Devices Inc., New York, N. Y., a corporation of New York Application July 12, 1949, Serial No. 104,166

Claims. (Cl. 98-40) The present invention relates to an adjustable plaster ring construction and it particularly relates to a system for installing ventilating or air conditioning equipment in ceilings, so that the plastering may thereafter be accomplished.

In installing the various ventilating and air conditioning equipment in ceilings and walls considerable difiiculty has been experienced in assuring that the plastering will take place at the desired state of construction and that it will thereafter not be necessary to break the plas' tering or to delay the plastering in order to install the ventilating or air conditioning equipment, as the case may be.

It is also desirable that the ventilating equipment may be so positioned, at least in part, in the ceiling or wall that ready adjustment may be made to provide for plastering, so that the plasterers will be able quickly and effectively to complete their job with a minimum of labor and a maximum of convenience and with assurance that the plaster will be properly positioned and aligned with the ceiling and with the air conditioning equipment.

It is among the objects of the present invention to provide an improved, adjustable plastering construction which may be readily assembled and mounted together with the installation of the air conditioning or ventilating equipment and which by way of relatively simple and minor adjustments, will permit readily plastering alignment and will enable the plasterers promptly to perform their task without delay and in proper sequence and with assurance that the plaster will be properly aligned and that the ceiling will be in correct position.

Another object of the present invention is to provide an improved ventilating or air conditioning installation enabling speedy, rapid and quick assembly of the various conduits and appliances and upon the ceilings and walls and which installation will enable completion of the steps in the construction in their proper sequence without loss of time and with the proper flow of material onto the job.

Still further objects and advantages will appear in the more detailed description set forth below, it being understood, however, that this more detailed description is given by way of illustration and explanation only and not by way of limitation, since various changes therein may be made by those skilled in the art without departing from the scope and spirit of the present invention.

In accomplishing the above objects it has been found most satisfactory, according to one embodiment of the present invention, to provide the lateral or enclosed sheet metal conduits Within the ceiling or walls, as the case may be. To connect to these conduits, there is a provided series of sleeves or collars to provide the connections between the concealed conduits and interior of the rooms.

These conduits are provided with slit ends to form a plurality of tabs, which may be readily folded down inside of the conduits to form a permanent connection between the sleeve or collar leading to the outlet and ace the main air conduit positioned in the interior of the ceiling or wall.

In the preferred form of the invention, the collars are provided with three or four or more brackets at spaced intervals around the periphery thereof. These brackets are desirably spot welded in position and may have an upper shoulder or contact ring to abut the main interior conduit.

The brackets are all provided with an outstanding portion carrying a bolt which is designed adjustably to receive a cylindrical ring of sheet metal, serving as a plaster ring and designed to be readily adjusted in height. When so adjusted it will enable the plasterers to complete their job in proper sequence and before the completion of the air conditioning or ventilating installation and before installation of the dampers and diffusers used in connection with air conditioning equipment.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described, and illustrated in the accompanying drawings, where n is shown an embodiment of the inventiornbut it is to be understood that changes, variations and modifications can be resorted to which fall Within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

Fig. 1 is a vertical transverse sectional view showing the position of the conduit, connecting sleeve, supporting brackets and adjustable plaster ring.

Fig. 2 is a bottom view of the outlet sleeve with adjustahle plaster ring, as shown in Fig. 2.

Fig. 3 is a side perspective view of the sleeve before mounting in connection with the main air conduits.

Referring to Figs. 1 to 3, the main air conduit A is normally positioned within the ceiling or wall and it will have a connection to a collar or sleeve B upon which are mounted brackets C. The brackets C will carry the adjustable plaster ring D.

One of the outer sections of the diffuser, which forms no part of the present invention, is indicated at E. Normally, the sleeve or collar B will receive damper construction as well as the diffuserat the lower portion thereof, and these arrangements are shown in other applications and do not form part of the present invention.

The main conduit A is usually first installed within the interior of the ceiling or wall, and it may be of rectangular cross section, being provided with the upper wall It), the side Walls 11 and a bottom or base wall 12, provided with a series of openings 13.

in the openings 13 there are inserted the upper ends 15 of the collars or sleeves B. The sleeves B are made of thin sheet metal tubes 14. The upper ends 15 of the tubes B are provided with a series of closely spaced slits 16 to form a series of tabs 17.

After the upper end 15 of the sleeve has been inserted in the direction indicated by the arrow 18 in Fig. 1 above the lower wall or base 12 of the conduit A, the tabs 17 are bent down, as indicated in Fig. 1. Then an insulating compound 20 is placed around the connection at 21 to form an air-tight joint.

Before assembly with the conduit A, the collar B may be provided with the brackets C. These brackets C are usually three or four in number and they consist of a vertical base portion 22 which is spot Welded, as indicated at 23, to the wall 14 of the collar or tube B.

The top of the bracket has a short, outstanding flange 24, to which is spot welded at 25 the ring 26. The ring 26 extends around the entire periphery of the tube terminal flange 28 Carrying the bolt 29. -The bolt 29 extends through the slot 30 in the center 31 of the plaster ring D. The bolt 29 is tightened in-position by the nut 41. V The lower end '32 of the plaster ring may be readily adjusted upwardly or downwardly, as indicated by the double arrow 33, so that the ceiling plaster line or level 34 may be aligned. V r a There is shown in dot-and-dash lines the outer mem ber 35 of a diffuser E, the inner flange 36 of which Will be positioned outside the lower end 37 of the tube C.

'This structur'e is more fully shown in Patent No.

2,269,376 dated January 6, 1942, of Cortland N. ODay. .Byithe arrangement shown, it is possible to readily adjust the plaster ring D after installation of the conduits A. Thus, a most convenient job may be accomplished with a'minimum of expense and in proper se-' quence of the construction and operation. Although the dimensions may be widely varied in one typical installatiomthe collars B may be of 14 to 16 gauge metal and may have a 8 inches.

"The brackets C, on the other hand, may be A2" in width The plaster rings D may be of 14 to 16 inch gauge metal and may be 2 inches in height. Desirably the adjustment of the lower edge 32 of the plaster rings below the lower edge 39 and the collars B may be about 1 inch. 7

While there has been herein described a preferred form of the invention, it should be understood that the same may be altered in details and in relative arrangement of parts within the scope of the appended claims.

Having now particularly described and ascertained the nature of the invention, and in what manner the same is to be performed, What is claimed is:

1. In a distributing conduit system for a building construction of the type having main conduits concealed within the ceilings; a plastering alignment system com: prisinga plurality of transversely positioned auxiliary air conduits and adjustable plaster vertically slotted rings having'horizontal clamping bolts extending through said slots, mounted on the external ends thereof, said plaster rings being concentric with and'of substantially greater diameter than said transverse conduits and extending 7 below said transverse conduits, and said transverse conduits extending from said main conduits toward the ceiling but terminating inside of the ceiling and carrying at their lower ends difi'users which project below and extend beyond and conceal said plaster rings, said auxiliary air conduits being provided with downwardly and outwardly extending supports and said bolts being carried by said supports while said slots are positioned in said rings and said bolts, slots and supports serving to mount said adjustable plaster rings on the external ends of said auxiliary air conduits. V

2. In a distributing conduit system for a building construction *of the type having main conduits con- 7 cealed Within the ceilings; a plastering alignment system comprising a plurality of transversely positioned auxiliary air conduits and adjustable plaster vertically slotted rings having horizontal clamping bolts extending through said slots, mounted-on the external ends thereof, a plurality of spaced brackets serving to mount said plaster rings on said air conduits, said plaster rings being concentric with and of substantially greater diameter than said t ransverse conduits and extending below said transverse conduits, and said transverse con- 6 inch height with a diameter of to duits extending from said main conduits toward the ceiling but terminating inside of the ceiling and carrying at their lower ends diflusers which project below 4. and extend beyond and conceal said plaster rings,1said bolts being mounted in the lower end of saidbrackets'. 3. In a distributing conduit system for a building construction of the type having main conduits concealed within the ceilings; a plurality of thin sheet metal transverse auxiliary conduits to connect to the interior of the building having slitted ends fitted within and bent down-inside of said main conduits to form a permanent connection, said auxiliary conduits having downwardly'and outwardly .extending brackets, plaster rings p0- sitioned around and concentric with the ends of said auxiliary conduits and said brackets carrying said plaster rings at the lower ends of the brackets, and said transverse co'ndui'ts'extending from said main conduits'toward the ceiling but terminating inside of the ceiling and carrying at their lower ends difiusers which project below and extend beyond and conceal said plaster rings.

4.'In a distributing conduit system for a building construction of the type having main conduits concealed'within the ceilings; a plurality of thin sheet metal transverse auxiliary: conduits to connect to the interior of the building having slitted ends fitted within and bent down inside of said main conduits to form a permanent connection and a sealing composition to form a seal around the connection of the bent down slitted ends of the auxiliary conduits to the main conduit's, said auxiliary conduits having downwardly and outwardly extending brackets, plaster rings positioned around and concentric with the ends of said auxiliary conduits and said brackets carrying said plaster rings at the lower ends of the brackets, and said transverse conduits extending fromsaid main; conduits toward the ceiling but terminating inside of the ceiling and carrying at their lower ends ditiusers which project below and extend beyond and conceal said plaster rings;

5. An adjustable plaster ring construction compris-' ing a main ventilating conduit having downwardly projecting thin sheet metal transverse conduits having downwardly and outwardly extending brackets with slot and bolt connections and an adjustable plaster ring mounted'on said connections adjacent the ends of said transverse conduits, said plaster rings being concentric with and of substantially greater diameter than said transverse conduits and extending below said transverse conduits, and said transverse conduits extending from said main conduits toward the ceiling. but terminating inside of the ceiling and carrying at their lower ends diffusers which project below and extend beyondand conceal said plaster rings.

6. An adjustable plaster ring construction comprising a main ventilating conduit having downwardly projecting thin sheet metal transverse conduits, a plurality of "brackets extending downwardly and outwardly from. said transverse conduits, said brackets having adjustable slots and bolt connections and plaster rings concentric with and encircling the lower ends of said transverse conduits and said bolt connections extending through said plaster rings and the lower ends of said brackets and said slots being positioned in the sides of said brackets.

7. An adjustable plaster ring construction comprising a main ventilating conduit having downwardly projecting transverse conduits, a plurality of brackets extend ing downwardly and outwardly from said transverse conduits and an adjustable plaster ring mounted'on said brackets, said plaster rings having a plurality of 'vertical slots, one for-each bracket and each bracket carrying a nut and bolt connection for each slot, said plaster rings being concentric with and of substantially greater diameter than said transverse conduits and extending below saidtransverse,conduits, and said transverse conduits extending from' said main conduits toward the ceiling but terminating inside of the ceiling and carrying at their lower ends difiuserswhich pro-V ject below and extend beyond and conceal said plaster rings.

8. In a plaster ring construction for a ceiling carrying air conditioning conduits of the type having main conduits running above the ceiling line and parallel to and concealed by the ceiling and transverse branch conduits connected to the main conduits and extending to and terminating short of the ceiling line, the ends of which branch conduits are designed to carry air diffusers projecting downwardly through and be positioned below the ceiling, said construction including plaster rings encircling and substantially spaced from the ends of the transverse branch conduits and extending below said branch conduits to the ceiling line to enable location of the plaster on the ceiling, said rings being adjustable in position in respect to the end of the branch conduit, said transverse branch conduits having outwardly and downwardly extending brackets for adjustably mounting said plaster rings, said brackets and rings being provided with adjustable bolt and slot connections.

9. In association with an air conditioning system for a room having a plaster ceiling, said system comprising a main horizontal air conduit above the ceiling plaster line and inside the ceiling, a transverse tubular conduit member connected to said main conduit and extending part-way through said ceiling and terminating short of the ceiling line, means enabling correct alignment of the plaster applied to the ceiling including a tubular plaster ring, the lower end of which gives said alignment, and said ring being of substantially greater diameter than said transverse member encircling and extending below said transverse conduit to the ceiling line, and means for adjustably suspending said plaster ring below and concentrically around and substantially spaced from said transverse conduit member, said adjustable ring including bolt and slot connections to the plaster ring, said transverse conduit having downwardly and outwardly extending brackets, and said plaster ring being mounted on the lower ends of said brackets.

10. The system of claim 9 in which said transverse member has a plurality of downwardly and outwardly extending brackets extending from the upper portion thereof, said brackets having clamping bolts at the lower ends thereof and said plaster ring having slot connec-.

tions to said bolts.

References Cited in the file of this patent UNITED STATES PATENTS 293,893 Lindley et al. Feb. 19, 1884 562,067 Copeland June 16, 1896 745,618 Hubbs Dec. 1, 1903 1,415,816 Edwards May 9, 1922 1,758,989 Walker May 20, 1930 1,818,858 McAlees Aug. 11, 1931 1,862,796 Martin, Jr. June 14, 1932 1,959,132 Jones May 15, 1934 2,010,322 Riddell Aug. 6, 1935 2,269,376 ODay Jan. 6, 1942 2,270,286 Gerriets Jan. 20, 1942 2,369,119 Dauphinee Feb. 13, 1945 2,566,558 De Roo Sept. 4, 1951 

